Buying portable million-dollar floors suitable for sports was a gamble for the Hawai‘i Convention Center. But it’s opened up a new international market for volleyball, basketball, indoor soccer—even Harry Potter’s favorite sport.

The 18th Annual Wahine Challenge at the Waimānalo Polo Field on Sunday, July 29, features dishes by "Food Network Star" chef Amy Pottinger, a silent auction and lots of thundering hooves—all while helping fight breast cancer.